Internet of things (IoT) proposes the use of devices with low energy capacity, processing, and memory power for a range of applications such as environmental monitoring and smart health. Such devices usually have sensing and wireless communication capabilities. Low power and lossy networks on mobile devices are a common type of wireless network in IoT applications. This article proposes the mobility aware RPL (MARPL), which is an extension of the IPv6 routing protocol for low-power and lossy network (RPL) in order to enhance its performance in networks with mobile nodes. The mobility of nodes increases packet loss in the canonical RPL protocol. The MARPL mobility mechanism adopts a crosslayer approach. The network layer uses signal strength measurements from the media access layer to calculate a node's variability neighborhood. Performance evaluation results obtained by the Cooja simulator confirm the effectiveness of MARPL regarding link disconnection prevention, packet delivery rate, low overhead, and energy consumption when compared with other protocols.

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Low Power and Lossy Networks (LLNs) is a common type of wireless network in IoT applications. LLN communication patterns usually requires an efficient routing protocol. The IPv6 Routing Protocol for Low-Power and Lossy Network (RPL) is considered to be a possible standard routing protocol for LLNs. However, RPL was developed for static networks and node mobility decreases RPL overall performance. These are the purposes of the Mobility Aware RPL (MARPL), presented in this paper. MARPL provides a mobility detection mechanism based on neighbor variability. Performance evaluation results on the Cooja Simulator confirm the effectiveness of MARPL regarding link disconnection prevention, packet delivery rate and fast mobile node topology reconnection with low overhead impact when compared to other protocols.